ASTROSAT CZTI

Data Quality Report

Orbit 40284

Creation date: 2024-06-27T22:14:31.757656
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_056T02_9000005538_40284cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40284cztM0_level2_quad_clean.evt
Size (bytes)1,954,183,680488,511,360
Size1.8 GB 465.9 MB
Events in quadrant A16,321,7223,305,753
Events in quadrant B14,201,1283,402,742
Events in quadrant C14,981,2243,282,698
Events in quadrant D24,557,8862,777,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0658387
B0615786
C0625306
D0930946

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05980
B05980
C05980
D05980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A294322460.835825%
B294321300.441696%
C294321130.383936%
D2943228579.707122%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 38543 29438 162 162 0.42% 0.55%
B 38543 29438 60 60 0.16% 0.20%
C 38543 29438 89 89 0.23% 0.30%
D 38543 29437 2522 2522 6.54% 8.57%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2252329 3357.17 3305 3243 669.9
A 13 248 1071519 1594.59 3305 3243 669.9
A 13 6 66538 94.48 3305 3243 669.9
B 0 245 429323 682.19 3291 3200 624.6
B 4 171 267830 423.65 3291 3200 624.6
B 5 255 265063 419.22 3291 3200 624.6
C 15 214 1226921 1629.5 3234 3254 750.9
C 14 254 1032973 1371.23 3234 3254 750.9
C 1 16 42338 52.05 3234 3254 750.9
D 12 227 4425860 5839.54 3100 3014 757.4
D 2 250 3404677 4491.26 3100 3014 757.4
D 12 218 1511479 1991.65 3100 3014 757.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter